Preliminary a short outline of the key ideas
Quetiapine acts as the active ingredient. Marketed most commonly as Seroquel, Seroquel XR, and as multiple generic products.
Drug class: atypical antipsychotic. Typical clinical beacons in the United States include treatment of schizophrenia, managing manic or mixed episodes in bipolar disorder, and adjunctive therapy for major depressive disorder. Some clinicians may use quetiapine off-label for other conditions when appropriate.
For rapid navigation to safety or adverse effect information, use the links to Comprehensive Security monitoring and Measures for safety and Undesired effects.
Dosage and forms
Quetiapine is available in immediate-release tablets and extended-release tablets in some presentations. Strengths commonly prescribed include the following:
- 25 mg
- 50 mg
- 100 mg
- 200 mg
- 300 mg
Dosing is tailored to each person. Your prescriber will set an initial titration plan and a maintenance dose based on your diagnosis, age, symptom response, and tolerance.
Information to share with your health care provider before starting quetiapine
Give a complete medical history and a list of all prescription and nonprescription medicines, vitamins, and herbal products you use. In particular, mention if you have any of the following:
- Seizure disorder or history of seizures
- Parkinson disease
- Cardiac conditions, previous myocardial infarction, or episodes of low blood pressure
- The ailment named diabetes or symptoms suggesting high blood sugar
- Impairment of renal or hepatic function
- Thyroid health issues
- Low blood cell counts
- Prior history of breast cancer
- Eye problems such as cataracts
- Difficulty swallowing
- Recent head injury or brain tumor
- Current or prior suicidal ideas or attempts in you or close family members
- Allergies to medicines, foods, or additives
- If you are pregnant or planning pregnancy, or breastfeeding
Instructions for using quetiapine
- Take tablets by mouth with water. If stomach upset occurs, you may take the dose with food.
- Follow the exact schedule on your prescription label. Do not take more frequently than prescribed.
- Do not discontinue quetiapine abruptly without clinical instruction. A gradual reduction is usually recommended to reduce the risk of symptom return. See Standard Security monitoring and Safety oriented necessary safeguards.
- If prescribed the extended-release (XR) version, swallow the tablet whole; do not crush, chew, or split it.
- Older adults may be more sensitive to the effects and often require lower doses.
- Pediatric use should be supervised by a specialist when indicated.
- If you suspect an having an overdose, contact poison control or go directly to the nearest emergency department right away.
- For guidance on i failed to take a doses, consult Forgotten medication dose.
Missed medication dose protocol
In case you miss a dose, take it as soon as you recall. If it is close to the time of your next scheduled dose (for example, within four hours), skip the i forgot to take my dose and continue with your regular dosing schedule. Do not take two doses at once to cover for a i forgot to take my dose.
Alerts for drug social interaction alerts
Drugs or products to avoid
Some medicines should not be used together with quetiapine because of the risk of severe tracking the back and forth of communications helps measure engagement.. Examples include:
- The pharmaceutical thioridazine
- Pimozide brand name Orap
- Mesoridazine, a chemical entity
- Droperidol for postoperative nausea and vomiting
- Sparfloxacin agent and grepafloxacin
- Halofantrine: an antimalarial compound
- The term cisapride denotes a particular prokinetic drug.
- The medication known as chlorpromazine
Potential drug and substance personal social interactions build trust and rapport. with quetiapine
- Alcoholic beverage product, which can increase sedation and impair coordination
- Strong CYP3A4 inhibitors such as ketoconazole, itraconazole, fluconazole, and voriconazole
- Macrolide class drugs including erythromycin
- Certain HIV antiretroviral agents
- Grapefruit or grapefruit juice, which can raise quetiapine levels
- CYP3A4 inducers including rifampin and some anticonvulsants (carbamazepine, phenobarbital, phenytoin)
- Cimetidine, an H2 blocker
- Other antipsychotics such as haloperidol
- Benzodiazepines and other central nervous system depressants
- Many medications used for depression and anxiety
- Drugs for diabetes and for high blood pressure
- Medications used in Parkinson disease
- Prednisone among systemic corticosteroids
This list may not include every item. Always provide your clinician and pharmacist with a complete list of all medicines and supplements you take.
Surveillance and preventive measures
- Benefits may take several weeks to appear. Keep scheduled follow-up appointments so your clinician can assess effectiveness and tolerability.
- Your provider may recommend baseline and periodic eye examinations.
- If you have been taking quetiapine for some time, do not stop suddenly. A clinician will provide a tapering schedule if discontinuation is appropriate.
- Be alert for new or worsening depression, suicidal thoughts, or abrupt behavioral changes, especially after starting or changing the dose. Contact your clinician immediately if these occur.
- Quetiapine commonly causes drowsiness and can impair alertness. Avoid driving or operating heavy machinery until you know how it affects you. Rise slowly from sitting or lying positions to lessen the risk of fainting.
- Avoid alcohol and validate the results thoroughly with your clinician before using over-the-counter medicines for cold, allergy, or diarrhea, as they can increase sedation.
- Your care team may check weight, blood pressure, fasting glucose, and lipid levels due to possible metabolic effects.
Possible drug-related effects
Serious unintended effects - seek medical attention promptly
- Signs of an allergic reaction: hives, rash, swelling of the face, lips, tongue, or throat
- Challenges with swallowing or breathing.
- Heartbeat that is fast and irregular
- High fever, sore throat, or unexplained bruising
- Marked increase in thirst or urination suggestive of high blood sugar
- Problems with coordination, speaking, or walking
- Epilepsy-related seizures
- Severe muscle stiffness or rigidity
- Recent development or progression of suicidal thoughts or behaviors
- Involuntary, repetitive movements of the face, mouth, or limbs
- Severe, unusual tiredness or weakness
Typical negative outcomes - often mild and may lessen over time
- Nodding off and feeling unsteady
- Oral dryness
- Straining to defecate
- Nausea or stomach unease
- Accumulated weight gain
- Changes in libido, sexual desire, and function
If after effects are persistent, severe, or troubling, contact your health care provider for advice about management or additional treatment modalities.
Storage module and disposal framework
- Keep medications out of the sight and reach of children.
- Store at normal room temperature, typically between 15 and 30 degrees C (59 to 86 degrees F).
- Please do not use after the expiration date. Dispose of unused medicine via a drug take-back program when possible or follow FDA guidance on safe disposal.
Options reviewed with a brief comparisons
Depending on diagnosis, prior response, side effect profiles, and other medical conditions, clinicians may choose other atypical antipsychotics. Some common other options include:
- Risperidone (Risperdal and generics) - may be more activating and can increase prolactin levels; moderate risk of extrapyramidal symptoms.
- Olanzapine (Zyprexa and generics) - effective for many patients but often associated with substantial weight gain and metabolic changes.
- Aripiprazole (Abilify and generics) - a partial dopamine agonist that tends to be less sedating and often has a lower metabolic burden.
- Ziprasidone (Geodon and generics) - lower metabolic impact for many patients but must be taken with food and has QT interval considerations.
- Lurasidone - Latuda - usually taken with food and is relatively weight neutral; commonly used in bipolar depression.
- Paliperidone (Invega) and asenapine (Saphris) - have specific formulations and tolerability profiles that may suit some individuals.
- Clozapine (Clozaril) - reserved for treatment-resistant schizophrenia and requires strict blood continuous oversight and enrollment in a risk evaluation program.
Choice of agent is individualized. Discuss potential benefits and risks, including cost and active monitoring needs, with your prescriber before switching or starting a new medication.
Rough cost projections for the United States (USD)
Cash price estimates without insurance or discounts. Actual prices vary by pharmacy, region, and dose.
- Quetiapine IR 25 mg, 30 tablets, generic version with price around $5 to $20
- Generic quetiapine IR 100 mg, 30 tablets: about $8 to $30
- Generic quetiapine IR 200 mg or 300 mg, 30 tablets: about $12 to $45
- Brand Seroquel XR 200 to 300 mg, 30 tablets: commonly $400 to $900 or more
- Generic other possible paths such as risperidone or ziprasidone: often $5 to $40 per 30 tablets depending on strength
- Some brand other possibilities like aripiprazole or lurasidone: frequently $500 to $1,200+ per 30 tablets without insurance
Insurance coverage, patient assistance programs, manufacturer coupons, and pharmacy discount plans can greatly lower out-of-pocket costs. Generics are typically much less expensive than brand-name XR formulations.
Legal validity status and admission access in the United States
- Regulatory status: quetiapine is a prescription-only medication in the United States and is not classified as a controlled substance under federal law.
- Prescribing and supply: prescribers may issue electronic or written prescriptions. Many pharmacies can dispense up to a 90-day supply when clinically appropriate and allowed by the prescriber and insurer.
- Telemedicine: clinicians providing telehealth services may prescribe quetiapine when the encounter meets state and federal telehealth requirements; state rules vary.
- Generic substitution: pharmacists commonly substitute FDA-approved generics for brand prescriptions unless the prescriber indicates no substitution.
- Health and safety warning advisories: boxed alerts of potential danger include increased risk of suicidal thoughts and behaviors in children, adolescents, and young adults; and increased mortality in elderly patients with dementia-related psychosis, for whom quetiapine is not approved.
- Driving and work safety: because quetiapine can impair alertness, using it together with then driving or operating heavy machinery may violate local safety rules if impairment contributes to an accident.
- Disposal: follow drug take-back programs or FDA recommendations for safe disposal of unused medicines.
- Financial assistance: many manufacturers and independent programs offer support to eligible patients to reduce the cost of both generics and brand medicines.
If you have questions about a prescription, substitution rights, or coverage, consult your pharmacist or prescriber. State laws and payer policies can affect how quetiapine is dispensed.
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